Machine for making bolts, pins, spindles, valves, and the like



hin 15 1926;

B. vAuRs MACHINE FOR MAKING BOLTS, PINS, SPINDLESfVALVES AND THE' LIKE 4 Sheets-Sheet 1 Filed Nov. 6, 1924 1;! Ver: far:

June 15 1926. 1,589,273

B. VAURS MACHINE FOR MAKING BOLTS, PINS, SPINDLES, VALVES, AND THE LIKE Filed Nov. 6. 1924 4 Sh eets-Sheet 2 June l5 1926. v B. VAURS MACHINE FOR MKING BOLTS, PINS, SPINDLES', VALVES Filed Nov. 6, 1924 a7 :9 as a AND THE'LIKE 4 Sheets-Sheet 5 L Van/26!".-

June 15 1926.

B. VAURS mom": FOR MAKING sows, PINS, mums, VALVES, AND THE LIKE Filed Nov.. 6. 9 4 Sheets-Sheet 4 j 25 take up the slack.

' w sliding Pmnaduune 1926.

UNITED: STA

BAPTIST]! VAURS,

OF PARIS, FRANCE.

HACHINE IOB*MAKING BOLTS, PINS, SPINDLES, VALVES, AND THE LIKE.

Applicationflled November s, 1924, Serial a... 148,056, and in Great Britain November is, 192:.

This invention relates to a forging and stamping machine, chiefly for making bolts in three stages but also applicable for making pins, spindles, valvesand the...like. To

5 th1s end, the machine may be provided successively with three diife'rent dies, but a generally preferred arran ement is three machines side by side eac provided with the dies required for one stage respectively.

10 Whatever the article to be manufactured, the machine according to the invention cs sentially comprises a press on the stand of which a block is adapted to move and be locked in its operative position by means 5 of detents. Operating means are .provided for simultaneously actuating the said detents and a slide'supporting the rod or blank from which the article, for exam le a bolt, is made. The bolt head is-forme at one en of the said blank, the said end being forged and stamped by the dies. The elements liable to become unduly heated are cooled by air. The block is guided on adjustable slideways so as to enable the attendant to The numerous advantages according to the present invention may be readily rasped from the following description T e machine is suitable for manufae 39 turing the above-mentioned articles with precision and on a large scale, the waste of metal being very small. j

A constructional example of the machine according to the invention and intended for making bolts, from which its general a lication will be readily understood, is 1 ustrated in the accompanying drawings in which- I Figure 1 is a diagrammatic view, 'Figura2 is or:cross-section throughm-the sliding block of the machine, ready to perform the work donein the first stage.

Figure 3 shows the sliding block ready for the second stage, in longitudinal section -partly through a vertical lane coincident with the axis of the mac ine and artly through a vertical plane coincident wit axis 1 of the operating shaft.

Figure 4 is a cross-section through the block ready for the third stage. Figures 5 and 6 illustrate an arrange= ment whereby the machine may be worked automatically.

Figures 1 to 4, the blank car- Referring to rier or block 2 is supported on the bed plate 1 suitably disposed on the frame 3 of the press which is 6 erated in the usual way by a shaft 4 rotate connected by a li the hammer or ram member 8. The said hammer is guidedbetween the two uprights of the press and carries the upper die 9. The dies used in the first and second sta es have a suitable cavity 10 while the die or the third stage has a hole 11 of hexagonal contour. The die '9 is always held in posit1on by a ring 12 threaded on the end of a head 13 mounted in the'hammer 8 inQany des red manner, provided that it may be easily removed and re laced. Cooling air is supplied to the said head through a screw-threaded duct 14, the said air passmg along a tube/15 and coming into contact d with the die 9, after which 1t leaves the head through ducts 16. The lubricatin oil required for the third stage is' supp ied.

through a duct 17.

The lower portion or foot of the block 2 is cut in dove-tail fashion and slides be tween two guides 18 hearing against two arallel holding-down members 19 bolted of the machine P to the bed plate 1. The inner faces of the guldes 18 converge towards the back of the machine so that any slack-due to wear-may be taken up by moving the said guides longitudinally in 'a forward direction. The' end movements of the block 2 are limited by a stationary stop '20 constituted by a plate screwed to the bed plate 1, and b an adjustable stop 21 constituted by a ho t screwed into a support 22 secured to the said bed plate.

The block 2 has three 0 bores-disposed along its ongitudinal axis, eaeln-bore being adapted -tn..recei-ve,.a slide. The two outer or end slides 23 are each prolindrical I vertical.

b a pulley 5 and suitably vor connecting .rod 7 to.

vided atone end with a movable detent 24,

their other ends each having a spring 25 'abuttin on a cover 26 closing the upper end of t e bore. The detents 24 are adapted to snap into engagement with suitable sockets 27 sunk in the bed plate 1 which is also provided with a bar 28 made of hard metal with which the detents are in frictional contact while the block 2 is moving. The said block is locked in position by the detent and slide arrangement just described and is released by means of a wheel 29' mounted on a shaft 30 horizontally disposed in the said block and carrying a pinion 31 em,

- per portion of the central bore is enlarged to the die for cooling the latter. Oil ducts centered in their working position.

and is adapted to receive the lower die which is pierced by a hole. A die 37 is provided for the two first stages and is arranged in a holder 38 supported on the block 2. The said die and holder are held in position by a ring 39 screwed ina ring l0 secured to the block by bolts 41 (Figure 3). The die for the third stage is held in a similar manner in a holder 38, but is moreover provided with a punch 42 which surmounts the assemblage and on which the bolt head rests when it is given its hexagonal shape. The block 2 has a duct 43 (Figure through which compressed air is led a l are also guides 18.

The machine works as follows: The block being in contact with the stop 20, the suitably heated rod or blank is placed in the die 37 of the machine held in readiness for provided for lubricating the the first stage. The block 2' is now moved on the bed plate 1 until the detents 24: en gage the sockets 27, when the elements age T e press is now operated by means'of a suitable pedal and the hammer causes the end of the blank to be The wheel 29 isnow rotated in the correct direction for raising the three slides 23 and 33 and-releasing the block 2 which may be brought back to its initial position. The blank is raised, easily removed and brought to the second machine, in which the operation is repeated. The unfinished bolt is now brought to the third machine in which the bolt head is punched into its final shape.

The machine or machines need not be manually operated. A mechanical operating deviceis illustrated in Figures 5 and 6, in which a bevel wheel 45 keyed to the driving shaft 4 meshes with another bevel wheel 46 carried on a. vertical shaft 47 suitably disposed on the frame 3 of the press. A shaft 49 lying under the bed plate 1 in the i vertical plane of the shaft 30 of the hand wheel, is rotated by the shaft 47 through an intermediate shaft 48. The block 2 has a lateral finger 50 adapted to contact-With the periphery of a suitably shaped cam 51 keyed to the shaft 48 and adapted to move the block 2 which is returned by a counterweight 52 connected to the said block by keyed to the driven shaft 49 pressed into shape in the diesa cord or cable 53 assing over a pulley 5d. The means locking the said block in positionare released (when the block is to be moved) by means of a toothed sector 55 and meshing with a suitably toothed port-ion of the shaft 30 for the purpose of raising the slides 23 and through the medium of the pinion 31. .The block 2 is to leave its loading position at the attendants will only; a bolt 56 is provided for this purpose.

The machine as described so far does not totally eject the finished article which is only raised when the slide 33- rises. Total ejection may be attained by providing the bed plate 1 with a hole 5'? in which a suitably held and guided ejector 58 is adapted to move. This ejector is jerkily raised by a tappet 59 secured to the shaft 49 so that the said ejector is operated when the slide 33 is vertically above it. @f course the various elements of the above-described mechanism are positioned relatively to each other so that they are moved intheir correct and pro-determined order.

The machine according to this invention may be modified in its details without departing from the invention. For in the automatically working arrangement, the transmission of power from the driving to the driven shaft may be effected by any suitable means. block may be returned by a spring, a rack or a link.

I claim:

1. A press, comprising a recessed bed plate; a block slidable thereon and pro vided with a vertical bore; a slidable workreceiving member in the bore; a plurality of movable detents carried by said block for engagement in the r cessesin the bed plate; a vertically-movable hammer .above the block; a pair of coacting dies, one mount-ed in the hammer and the other in the upper end of said bore; and an actuating device common to the detents and the work-receivmg member for raising them simultaneously. 2. A press, comprising a bed plate having a plurality of recesses; a block slidable on said plate and having a plurality of vertical bores including a detent-receiving bore individual to each recess and a work-receiving bore; a spring-loaded detent slidable vertically in for engagement in said recesses; a work-re ceiving member slidable vertically in the second-named bore; a vertically-movable hammer above the block; a pair of co-acting dies, one mounted in the hammer and the other in the upper end of said second-named bore; and an actuating device common to the detents and for raising them simultaneously.

3. A press, according to claim 2, in which each detent is carried by a sleeve that fits the work-receiving member example if Tn a similar manner, the

each first-named bore and adapted slidably in the respective bore, each such sleeve and the work-receiving member being provided with a vertical series of rack teeth; and in which the common actuating device embodies a pinion engaging all said sets i teeth, and means for rotating such pinion.

4. A' press, comprising a. recessed bed plate; a block slidable thereon and provided with a vertical bore; guides adjustably, attached to the bed plate and having converging internal wear-compensating faces for engaging the block; a slidable work-receiving member in the bore of said block; a plurality of movable detents carried by said block for engagement in the recesses in the bed plate; a vertically-movable hammer above the block; a pair of coacting dies, one mounted in the hammer and the other in the upper end of said bore; and an actuating device common to the detents and the workreceiving member for raising them simultaneously.

5. A press, comprising a recessed bed plate; a block slidable thereon and rovided with a vertical bore; a slidable wor -receiving member in said bore; a plurality of movable detents carried by the block for engagement in the recesses in the bed plate; a vertically-movable hammer above said block; a pair of coacting dies, one mounted-in the hammer and the other in the upper end of said bore; an actuating device common to all the detents and the work-receiving member for operating them simultaneously, said device embodying a shaft; and automatic means connected with said shaft for shifting said block while the detents are released.

In testimony whereof I aflix my signature.

BAPTISTE VAURS. 

